The unmanned tank couldn’t operate as far away from its controllers as expected, had problems firing its 30mm gun, and couldn’t fire while moving, amid other problems, according to Popular Mechanics, citing the Defence Blog.

But in Syria, it could only be operated from about 984 to 1,640 feet from its operators around high-rise buildings, the Defence Blog reported, citing reports from the 10th all-Russian scientific conference “Actual problems of protection and security” in St. Petersburg.

The robot tank’s controller also randomly lost control of it 17 times for up to one minute and two times for up to an hour and a half, Defence Blog reported.

But its 30-millimetre 2A72 automatic cannon delayed six times and even failed once, Defence Blog reported, and it could only acquire targets up to about 1.24 miles away, as opposed to the expected four miles.

Apparently the tank’s optical station was seeing “multiple interferences on the ground and in the airspace in the surveillance sector,” Defence Blog reported.

The unmanned tank even had issues with its chassis and suspension system, and required repairs in the field, Defence Blog reported.

“The Uran-9 seems to have proven to be more about novelty than capability, but that doesn’t mean these tests are without value,” SOFREP reported. “In time (and with funding) a successor to the Uran-9 may one day be a battlefield force to be reckoned with.”